Rewrite the following sentences in quotation marks using active voice:

1. In a contract under which Company A is purchasing television sets from Company Z:"Television sets may at any time be rejected for defects or defaults revealed by inspection, analysis, or by manufacturing operations or for use after delivery even though such goods or services may have previously been inspected and accepted."

2. In Company X's employer-sponsored retirement plan for its employees:"The Plan has been established, maintained, and administered in substantial compliance with its terms and with applicable provisions of ERISA."

3. In a contract for the purchase of goods:"Any payment to be made by the Purchaser under to this Agreement not made in a timely manner shall bear interest at the rate of one and one-half percent per month or fraction thereof from the date due until the date of payment."

4. In a contract for the purchase and delivery of products:"The Product shall be delivered by the Supplier to the Buyer on June 1, 2021."